Heat Transfer in a Porous Chamber

Porous Chamber Heat Transfer — ANSYS Fluent CFD Simulation

Description

This project explores heat transfer through porous media using ANSYS Fluent, analyzing the thermal behavior of a porous chamber. When fluid flows through a porous material while heat is exchanged, the combination of the solid matrix and the fluid filling its pores governs the overall heat transfer in a way that a plain fluid does not — making porous media a powerful tool for thermal management. Porous materials appear throughout heat exchangers, thermal energy storage, and electronic cooling, and understanding how they transfer heat is central to optimizing those systems. Within the Porous Media: Beginner CFD Training Package, this project introduces heat transfer to the porous-zone model, building on the flow-only cases toward coupled thermal-porous analysis.

Methodology

The project uses a pre-configured porous chamber model. The flow through the porous medium is governed by Darcy's law and its extensions, implemented through the porous-media model, while the heat transfer depends on the effective thermal conductivity that combines the solid and fluid phases. The mesh is generated to capture the porous structure appropriately, and the physical models are selected and configured — the porous-media model together with suitable turbulence and heat-transfer models. Boundary conditions are defined for the fluid inlet and outlet (flow rates, pressures, and temperatures) and for the thermal conditions at the porous-solid interfaces, so the coupled flow and heat transfer through the chamber are captured realistically.

Analysis

Post-processing visualizes the flow patterns through velocity vectors and streamlines and the temperature distribution through contour maps, assessing the heat-transfer effectiveness across the chamber. A parametric study examines how changes in porosity and permeability affect the flow patterns, pressure drop, and heat-transfer rates, allowing the porous structure to be optimized for a given thermal application. The results also support calculating effective heat-transfer coefficients and evaluating local thermal non-equilibrium — the temperature difference between the solid and fluid phases. By the end of this project, you'll be able to set up a coupled porous-media heat-transfer simulation, apply Darcy's law with appropriate thermal boundary conditions, run a parametric study of porosity and permeability, and interpret the temperature and flow fields that determine the thermal performance of a porous chamber.